Interplay between magnetic, metal/insulator and topological phases in Hg1−xMnxTe alloys: prediction of a ferromagnetic Weyl semimetal at x = 0.25
| dc.creator | Orlando José Silveira Júnior | |
| dc.creator | Luiz Cláudio de Carvalho | |
| dc.creator | Horacio Wagner Leite Alves | |
| dc.creator | Helio Chacham | |
| dc.date.accessioned | 2024-02-19T13:22:21Z | |
| dc.date.accessioned | 2025-09-09T00:05:06Z | |
| dc.date.available | 2024-02-19T13:22:21Z | |
| dc.date.issued | 2019 | |
| dc.description.sponsorship | CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
| dc.description.sponsorship | FAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais | |
| dc.description.sponsorship | CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
| dc.description.sponsorship | INCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio) | |
| dc.identifier.doi | https://doi.org/10.1088/1361-648X/ab3270 | |
| dc.identifier.issn | 1361-648X | |
| dc.identifier.uri | https://hdl.handle.net/1843/64160 | |
| dc.language | eng | |
| dc.publisher | Universidade Federal de Minas Gerais | |
| dc.relation.ispartof | Journal of Physics: Condensed Matter | |
| dc.rights | Acesso Restrito | |
| dc.subject | Magnetismo | |
| dc.subject | Ligas | |
| dc.subject | Teoria do funcional da densidade | |
| dc.subject.other | Weyl semimetal | |
| dc.subject.other | Magnetism | |
| dc.subject.other | Alloys | |
| dc.subject.other | Density functional theory | |
| dc.title | Interplay between magnetic, metal/insulator and topological phases in Hg1−xMnxTe alloys: prediction of a ferromagnetic Weyl semimetal at x = 0.25 | |
| dc.type | Artigo de periódico | |
| local.citation.epage | 8 | |
| local.citation.issue | 43 | |
| local.citation.spage | 1 | |
| local.citation.volume | 31 | |
| local.description.resumo | We report a theoretical investigation of magnetic, electronic, and topological properties of Hg1−xMnxTe alloys. We consider periodic structures with Mn concentrations as x = 0, 0.25, 0.5, 0.75, and 1. Our hybrid DFT/Hartree–Fock calculations for the bandgaps of antiferromagnetic (ground-state) phases are in good agreement with experiments. The calculations also show that the modification of the magnetic ordering from anti- to ferromagnetic leads to a significant bandgap reduction, resulting in a metal/insulator transition at higher Mn concentrations. We show that a ferromagnetic Weyl semimetal phase is achieved for x = 0.25, where a single pair of Weyl nodes mirrored by the point in the momentum space is observed. The non-trivial topological property of the ferromagnetic Hg0.75Mn0.25Te is confirmed by the calculation of the chirality of each Weyl node, which are connected by a surface Fermi arc of a semi infinite Hg0.75Mn0.25Te. | |
| local.identifier.orcid | https://orcid.org/0000-0002-0403-9485 | |
| local.identifier.orcid | https://orcid.org/0000-0003-1434-6582 | |
| local.identifier.orcid | https://orcid.org/0000-0003-1612-2523 | |
| local.identifier.orcid | https://orcid.org/0000-0001-5041-9094 | |
| local.publisher.country | Brasil | |
| local.publisher.department | ICX - DEPARTAMENTO DE FÍSICA | |
| local.publisher.initials | UFMG | |
| local.url.externa | https://iopscience.iop.org/article/10.1088/1361-648X/ab3270 |
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